2009 Yamaha Motorsports Grizzly 450 4x4 Owners Manual - Page 129

G If water has been added to the coolant, have a Yamaha dealer check the antifreeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced. TIP There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air filter case. 14. Install the radiator cap, start the engine, let it idle for several minutes, and then turn it off. 15. Remove the radiator cap to check the coolant level in the radiator. If it is low, add sufficient coolant until it reaches the top of the radiator, and then install the radiator cap. 16. Start the engine, and then check for coolant leakage. TIP If any leakage is found, have a Yamaha dealer check the cooling system. 17. Install the panels and the front carrier. EBU23635 8 1. Air filter case check hose Cleaning the air filter element The air filter element should be cleaned at the intervals specified in the periodic maintenance and lubrication chart. Clean or, if necessary, replace the air filter element more frequently if you are riding in unusually wet or dusty areas. 8-31 1. Place the ATV on a level surface. 2. Remove the seat. (See page 4-19.) 3. Remove the air filter case cover by unhooking the air filter case cover holders.